Data is not sent using the bluetooth jack (Android)

Question

I am trying to send a file using Android bluetooth sockets. I receive pairing requests, but, unfortunately, the data is not transmitted on my server side and the client side looks like this:

Server: (there is data for my application server)

public void run() { super.run(); BluetoothAdapter mBtadapter = BluetoothAdapter.getDefaultAdapter(); Log.i("bluetooth Adapter", "got adapter "+ mBtadapter.getAddress()); try { Ssocket = mBtadapter.listenUsingRfcommWithServiceRecord("CardXchange", uuid); Log.i("Socket", "Socket Acquired "+ Ssocket.toString()); } catch (IOException e) { e.printStackTrace(); } while(true){ if(read_flag()==1){ try { Toast.makeText(c, "flag is eventually 1", Toast.LENGTH_LONG).show(); Ssocket.close(); } catch (IOException e) { e.printStackTrace(); } break; } try { client_socket = Ssocket.accept(); if(client_socket!=null){ //this function is used to handle the connection when sockets get connected manageConnection1(client_socket); Ssocket.close(); break; } } catch (IOException e) { e.printStackTrace(); } } Log.i("breaked ", "oh god!! out of the loop "); } //implementation of the function private void manageConnection1(BluetoothSocket client_socket2) { // TODO Auto-generated method stub int bytes; Log.i("serevr chya manage connection madhe gela", "in servers manage connection "); File file = new File("/sdcard/myfolder/received.Xcard"); try { FileOutputStream fos = new FileOutputStream(file); try { InputStream is = client_socket2.getInputStream(); while((bytes = is.read(buffer, 0, 1024))>0){ fos.write(buffer, 0, 1024); } is.close(); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } catch (FileNotFoundException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } try { client_socket2.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } 

and the client side (the sending side is :)

 public void run(){ try { Method m = send_dev.getClass().getMethod("createRfcommSocket", new Class[] {int.class}); Csocket = (BluetoothSocket) m.invoke(send_dev, 1); Csocket.connect(); manageSendConnection(Csocket); }catch(Exception e){ e.printStackTrace(); } } //function to handle after connection is established. private void manageSendConnection(BluetoothSocket csocket) { // TODO Auto-generated method stub File f = new File("/sdcard/myfolder/card3.Xcard"); byte[] buffer = new byte[(int)f.length()]; try { FileInputStream fis = new FileInputStream(f); BufferedInputStream bis = new BufferedInputStream(fis); try { bis.read(buffer, 0, (int)f.length()); OutputStream os = csocket.getOutputStream(); os.write(buffer); os.close(); fis.close(); bis.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } catch (FileNotFoundException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } try { csocket.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } 

I get a pairing request, but no data is sent. can someone help me find the problem and give a hint for a solution?